Freeman, A. M. (2003). Measurement of environmental and resource values: Theory and methods. Resources for the Future.
Цитирование в стиле Чикаго (17-е изд.)Freeman, A. Myrick. Measurement of Environmental and Resource Values: Theory and Methods. Washington, DC: Resources for the Future, 2003.
Цитирование MLA (9-е изд.)Freeman, A. Myrick. Measurement of Environmental and Resource Values: Theory and Methods. Resources for the Future, 2003.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.